31553212232 has 16 divisors (see below), whose sum is σ = 59972716140. Its totient is φ = 15560487936.

The previous prime is 31553212217. The next prime is 31553212241. The reversal of 31553212232 is 23221235513.

It can be written as a sum of positive squares in 2 ways, for example, as 30985152676 + 568059556 = 176026^2 + 23834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31553212195 and 31553212204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27014153 + ... + 27015320.

Almost surely, 2^31553212232 is an apocalyptic number.

It is an amenable number.

31553212232 is a deficient number, since it is larger than the sum of its proper divisors (28419503908).

31553212232 is a wasteful number, since it uses less digits than its factorization.

31553212232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54029552 (or 54029548 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

Adding to 31553212232 its reverse (23221235513), we get a palindrome (54774447745).

The spelling of 31553212232 in words is "thirty-one billion, five hundred fifty-three million, two hundred twelve thousand, two hundred thirty-two".